XML 66 R55.htm IDEA: XBRL DOCUMENT
v3.21.2

FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Assets [Abstract] |  |
Marketable securities: | $ 955,802 |
Liabilities: |  |
Contingent consideration | 3,653 | $ 0
Commercial paper |  |
Assets [Abstract] |  |
Marketable securities: | 148,957 |
Corporate notes and bonds |  |
Assets [Abstract] |  |
Marketable securities: | 179,412 |
U.S. Government agencies |  |
Assets [Abstract] |  |
Marketable securities: | 287,449 |
U.S. Treasuries |  |
Assets [Abstract] |  |
Marketable securities: | 339,984 |
Recurring | Level 1 |  |
Assets [Abstract] |  |
Investments in debt securities | 0 | 0
Total assets measured at fair value | 411,839 | 654,699
Liabilities: |  |
Contingent consideration | 0 | 0
Warranty obligations |  |
Warranty obligations, current | 0 | 0
Warranty obligations, non-current | 0 | 0
Total warranty obligations measured at fair value | 0 | 0
Total liabilities measured at fair value | 0 | 0
Recurring | Level 1 | Commercial paper |  |
Assets [Abstract] |  |
Marketable securities: | 0 | 0
Recurring | Level 1 | Corporate notes and bonds |  |
Assets [Abstract] |  |
Marketable securities: | 0 | 0
Recurring | Level 1 | U.S. Government agencies |  |
Assets [Abstract] |  |
Marketable securities: | 0 | 0
Recurring | Level 1 | U.S. Treasuries |  |
Assets [Abstract] |  |
Marketable securities: | 0 | 0
Recurring | Level 1 | Money market funds |  |
Assets [Abstract] |  |
Cash and cash equivalents | 411,839 | 654,699
Recurring | Level 1 | Commercial paper |  |
Assets [Abstract] |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 1 | Corporate notes and bonds |  |
Assets [Abstract] |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 1 | U.S. Treasuries |  |
Assets [Abstract] |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 2 |  |
Assets [Abstract] |  |
Investments in debt securities | 0 | 0
Total assets measured at fair value | 955,802 | 0
Liabilities: |  |
Contingent consideration | 0 | 0
Warranty obligations |  |
Warranty obligations, current | 0 | 0
Warranty obligations, non-current | 0 | 0
Total warranty obligations measured at fair value | 0 | 0
Total liabilities measured at fair value | 0 | 0
Recurring | Level 2 | Commercial paper |  |
Assets [Abstract] |  |
Marketable securities: | 34,964 | 0
Recurring | Level 2 | Corporate notes and bonds |  |
Assets [Abstract] |  |
Marketable securities: | 171,167 | 0
Recurring | Level 2 | U.S. Government agencies |  |
Assets [Abstract] |  |
Marketable securities: | 287,449 | 0
Recurring | Level 2 | U.S. Treasuries |  |
Assets [Abstract] |  |
Marketable securities: | 14,997 | 0
Recurring | Level 2 | Money market funds |  |
Assets [Abstract] |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 2 | Commercial paper |  |
Assets [Abstract] |  |
Cash and cash equivalents | 113,993 | 0
Recurring | Level 2 | Corporate notes and bonds |  |
Assets [Abstract] |  |
Cash and cash equivalents | 8,245 | 0
Recurring | Level 2 | U.S. Treasuries |  |
Assets [Abstract] |  |
Cash and cash equivalents | 324,987 | 0
Recurring | Level 3 |  |
Assets [Abstract] |  |
Investments in debt securities | 61,153 | 0
Total assets measured at fair value | 61,153 | 0
Liabilities: |  |
Contingent consideration | 3,653 | 0
Warranty obligations |  |
Warranty obligations, current | 12,395 | 8,267
Warranty obligations, non-current | 32,905 | 20,469
Total warranty obligations measured at fair value | 45,300 | 28,736
Total liabilities measured at fair value | 48,953 | 28,736
Recurring | Level 3 | Commercial paper |  |
Assets [Abstract] |  |
Marketable securities: | 0 | 0
Recurring | Level 3 | Corporate notes and bonds |  |
Assets [Abstract] |  |
Marketable securities: | 0 | 0
Recurring | Level 3 | U.S. Government agencies |  |
Assets [Abstract] |  |
Marketable securities: | 0 | 0
Recurring | Level 3 | U.S. Treasuries |  |
Assets [Abstract] |  |
Marketable securities: | 0 | 0
Recurring | Level 3 | Money market funds |  |
Assets [Abstract] |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 3 | Commercial paper |  |
Assets [Abstract] |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 3 | Corporate notes and bonds |  |
Assets [Abstract] |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 3 | U.S. Treasuries |  |
Assets [Abstract] |  |
Cash and cash equivalents | $ 0 | $ 0

X
- Definition Standard and Extended Product Warranty Accrual, Current, Fair Value Disclosure + References No definition available. + Details
Name: | enph_StandardAndExtendedProductWarrantyAccrualCurrentFairValueDisclosure
Namespace Prefix: | enph_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Standard and Extended Product Warranty Accrual, Fair Value Disclosure + References No definition available. + Details
Name: | enph_StandardAndExtendedProductWarrantyAccrualFairValueDisclosure
Namespace Prefix: | enph_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Standard and Extended Product Warranty Accrual, Noncurrent, Fair Value Disclosure + References No definition available. + Details
Name: | enph_StandardAndExtendedProductWarrantyAccrualNoncurrentFairValueDisclosure
Namespace Prefix: | enph_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Warranty Obligations + References No definition available. + Details
Name: | enph_WarrantyObligationsAbstract
Namespace Prefix: | enph_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AssetsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=116859824&loc=d3e6819-128478 + Details
Name: | us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
Name: | us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References No definition available. + Details
Name: | us-gaap_DebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LiabilitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=enph_CorporateBondSecuritiesAndNoteSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_CommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=enph_CorporateBondSecuritiesAndNoteSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |